Evidence map›Paper›PMID 36216983›Full record

ReviewLab animal2022

Optimized protocols for sperm cryopreservation and in vitro fertilization in the rat.

Toru Takeo, Satohiro Nakao, Nobuyuki Mikoda, Katsuma Yamaga, Ryusei Maeda, Shuuji Tsuchiyama, Ena Nakatsukasa, Naomi Nakagata

Abstract readReview
PubMed Publisher
In one paragraph

Review in Lab animal, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
3.1field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed, 19 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 1 country.

Toru Takeo *Division of Reproductive Engineering, Center for Animal Resources and Development, Institute of Resource Development and Analysis, Kumamoto University, Kumamoto, Japan.
Satohiro Nakao *Division of Reproductive Engineering, Center for Animal Resources and Development, Institute of Resource Development and Analysis, Kumamoto University, Kumamoto, Japan.
Nobuyuki MikodaDivision of Reproductive Biotechnology and Innovation, Center for Animal Resources and Development, Institute of Resource Development and Analysis, Kumamoto University, Kumamoto, Japan.
Katsuma YamagaDivision of Reproductive Engineering, Center for Animal Resources and Development, Institute of Resource Development and Analysis, Kumamoto University, Kumamoto, Japan.
Ryusei MaedaDivision of Reproductive Engineering, Center for Animal Resources and Development, Institute of Resource Development and Analysis, Kumamoto University, Kumamoto, Japan.
Shuuji TsuchiyamaDivision of Reproductive Engineering, Center for Animal Resources and Development, Institute of Resource Development and Analysis, Kumamoto University, Kumamoto, Japan.
Ena NakatsukasaDepartment of Animal Model Development, Brain Research Institute, Niigata University, Niigata, Japan.
Naomi NakagataDivision of Reproductive Biotechnology and Innovation, Center for Animal Resources and Development, Institute of Resource Development and Analysis, Kumamoto University, Kumamoto, Japan. nakagata@kumamaoto-u.ac.jp.ORCID http://orcid.org/0000-0002-5737-9993
Kumamoto University · JPNiigata University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Laboratory rats have been used in biomedical research for over 170 years. Recently, genome editing technology has facilitated the generation of genetically modified rats worldwide. This development has increased the demand for efficient preservation and production of rat resources. Sperm cryopreservation is the most efficient and robust means to archive genetic resources, and this technique reduces the number of animals required for colony management. Previously, we have reported a protocol for rat sperm cryopreservation and in vitro fertilization using frozen-thawed sperm. Here we describe an improved in vitro fertilization protocol to enhance the fertilization rate of cryopreserved sperm in major strains of rats. In this optimized protocol, treatment of frozen-thawed rat sperm with a high concentration of bovine serum albumin (40 mg/ml) results in a high in vitro fertilization rate. This protocol consists of three main steps: preparation of cryopreserved sperm, in vitro fertilization using cryopreserved sperm and embryo transfer. This process takes approximately 1 month to produce live pups from cryopreserved sperm. This protocol can be easily implemented by researchers and technicians with experience in reproductive engineering technology; it can also be used, albeit with some practice, by researchers and technicians who have no experience in reproductive techniques. This sperm cryopreservation and in vitro fertilization protocol for rats will provide an efficient system for the archiving and production of genetically modified rats for the transgenic community.

Indexed as

SemenSerum Albumin, BovineAnimalsCryopreservationFertilization in VitroMaleRatsSpermatozoaSerum Albumin, Bovine

Identifiers

PMID36216983
OpenAlexW4304083960

What Socratic holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.